issue 1 - probably the Project/Dynamics/Expert settings, Steps per Frame, max Solver Iterations per Step check the Help for descriptions
issue 2 - the Help again Dynamics/Tips and Tricks/The Party’s Over says it - "Let’s say you create an animation in which you pour a large number of Clones into a box. After you render the scene you notice that the Clones still have not completely come to rest, even ten seconds into the animation. There are several ways to keep these Clones quiet:
Increase the Linear Damping and Angular Damping values.
Reducing the Bounce value and increasing the Friction value will also help take the energy out of the Clones.
Increase the Linear Velocity Threshold and Angular Velocity Threshold values.
If this doesn’t help just use steamroller tactics: If Time Scale is set to 0 the simulation will freeze instantly.
Generally speaking, Damping are well-suited for bringing dynamic movements to a rest. For Soft Bodies, damping can even be defined precisely at vertex level."